Question about Panasonic PT-51HX41 51" Rear Projection Television

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Problem is double lettering PT-51HX41 51

Plese.need help ned to know how to identified the resistor under head sink that the STK392-110 are mounted on  problem is double lettering on the left and right side of the screen . THE TWO STK 392-110 IS NEW ORIGINAL,  IS A PANASONIC=PT-56HX41E=CHASSIS=AP820               YOUR OPINION PLEASE                                                                     ATT                                                                   BONANO                                                       

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Re: problem is double lettering PT-51HX41 51

What is the resistor location as shown on board.....for instance,

Posted on Nov 08, 2007

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Panasonic PT-53wx54j" Rear Projection Television blinking light 3 times, wont turn back on. Originally turned off by itself

sounds like a bad power supply my mother has one done the same thing we found out he power supply went bad $125 to fix so we junked it and she bought another TV

Jan 29, 2014 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

I have panasonic hdtv 1080 bbe. when I turned it on this morning everything was double vision. I see the normal but everything has a red double. what can I do to correct this

As long as the set doesnt shut down and have a 3 flash error code then just replacing the two STK392-110 ICs should solve the issue. However the Low ohm resistors (six 2.2 ohm resistors ) should be checked and possibly replaced with the ICs. You can get the actual convergence repair kit for your model which contains the ICs, Heat sink paste, resistors and the CD with instructions from

Aug 06, 2011 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Television has double images like 3D, and bottom half of screen has a concaved image.

Please replace convergence ICs in tv, there are two big black ICs that has number STK392-110 mounted with big aluminum heat sink, replacement these ICs will solve your tv problem. Also check big resistor nearby these convergence ICs and replace if found burn mark or color faded.
On circuit board, IC location number is IC7001 and IC7002
Let me know if you have additional question.

Dec 25, 2010 | Panasonic PT-47WX49 47" Rear Projection...

3 Answers

Television is not turning on

3 blinks is short protection on this model---98% chance one of the two STK-392-110 Convergence chips it uses has shorted.

If you unplug set and look inside you will find two black chips that have that number printed on the front of them in white letters. Right in front of them you will find about a dozen light blue resistors---most are marked 2.2 ohms---look if you get a chance---if even one of those resistors is white in the middle (discolored) you have found your problem.

Both chips and any bad resistors need to be replaced.

The repair involves getting at the parts and replacing them--the chips each are mounted side by side on metal heat sinks with fins--each has 18 pins.

Most shops get 300 or more for this repair but the actual parts cost if you or someone you know can do it is under 30 dollars.

I have START TO FINISH, STEP BY STEP INSTRUCTIONS FOR THIS REPAIR IN THIS SET. I got a notice from a lady who used them to fix the same set you have---she saved the set and a lot of money.

The instructions tell you everything you will need and how to do the repair----clearly I do not know how much skill you have---it involves soldering etc.

If you want the instructions I will post them here for you to look at and copy/ paste them. Once you read them you should know if you can do the repair------they are my own instructions based on doing this repair hundreds of times.

I will also post a photo here showing what the chips look like.

Repair takes me about 1 hour; if you are doing it for the first time it will take you longer.

I also know the best place to get the chips at reasonable price.

If this information has helped you rate this solution as I do this here for free.



Jan 01, 2010 | Panasonic PT-47WX49 47" Rear Projection...

2 Answers

Tv turned itself off. turn power back on, picture

Your TV is experiencing a convergence issue as indicated by the 3 blinks. The only way to fix this is replacing the convergence ICs. It is not a hard task to replace these ICs. You just need to know how to solder and work on printed circuit boards.

The convergence ICs are mounted on a large heat sink and are marked with codes starting with the letters STK and there are two of them. You need to replace both.

Look for the heat sink with two ICs mounted on it and check the markings.

Once found, cut the IC legs with a small side cutter and unscrew it from the heat sink. Remove the legs left soldered on the board.

Take note of the IC markings for ordering the right part and how it was installed. Don't forget to buy along with the IC a thermal compound.

Check the pico fuses on the same board. Most likely you will find a blown one. These fuses look very much like a resistor, not like the usual transparent fuse, and usually yellow.

Once you have the replacement ICs, put it on the board in the same way as it was installed before. Make sure the screw holes are aligned before soldering the legs into the board.

Put a reasonable amount of thermal grease/compound between the ICs and the heat sink and fix them with the screws.

Double check the board for any splash of solders that might cause a short circuit and damage the board.

Dec 07, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

I have a Panasonic PT-56WX51E that started showing double images with a green & red tint, above the original image. I have attempted to connect straight to the box, using DVD & VCR to see if the...

This is really a very simple thing to diagnose---go into the customer menu and select convergence--if red or blue is skewed there and will not adjust in some direction--you have a convergence circuit problem.

These sets use two convergence IC chips--if convergence will not adjust you need to replace both chips along with any of the resistors around them that protect the set and are bad.

Parts are cheap for this ----less than 30 dollars for everything you will need.

Based on the Pt56wx51e model number this set uses two of the STK-392-110 chips--they are black and side by side on metal heat sinks with fins and will have the full STK number printed on them in white letters.

Most shops get 300 or more for this kind of repair. If you or someone you know can do it you can save a lot of money.

The repair really only involves two things: getting at the chips and parts and being able to unsolder and replace them.

I HAVE START TO FINISH STEP BY STEP INSTRUCTIONS FOR THIS REPAIR ON THIS MODEL. They will tell you everything you need to do the repair and how to do it--I have fixed hundreds of these sets with convergence problems.

If you think you can do it let me know and I will post the full instructions here for you.

Once the problem is fixed the set will not have the same trouble for 5-8 years--lifespan of the parts.

If this has helped you rate this solution as I do this here for free.


Dec 06, 2009 | Panasonic PT-56WX51 56" Rear Projection...

1 Answer

I have a panasonic pt-47wx42 a red shadow of the pick just showed up looks like a double???

If you have gone into the customer menu and CONVERGENCE is skewed and will not adjust:

One or both of the two STK-392-110 convergence chips that this set uses are bad.

The chips are about 2 1 /2 inches wide by 1 1/2 inches tall and are black in color. They are mounted on metal heat sinks2.gif with fins and are side by side--they will have the Stk-392-110 number printed on them in white letters.

If you locate them take a good look at all the light blue resistors in front of them--most are marked 2.2 ohms---look for any that are white or discolored in the middle---if you find one or more YOU HAVE FOUND YOUR PROBLEM.

BOTH chips and any bad resistors need to be replaced and the set adjusted. If you can do this repair you can save a lot of money as you can buy both chips (a pair) on Ebay for about 12 dollars plus shipping2.gif.

I have start to finish instructions for this repair on this type of set.

If you cannot do this repair yourself, shop around your area--most shops charge 300-400 for this kind of repair--I do them here for 200-250 and have done hundreds of them.

If they say it has to go to the shop--keep looking as any good tech can do this repair in your home in about 1 hour.

If you have any questions or need advice reply to this posting here OR check out all my many solutions here for more information concerning what I have told you.

I am here to help people. If this information was helpful rate this solution as I do this here for free.

Regards, SD TECH

Nov 07, 2009 | Panasonic PT-47WX42 47" Rear Projection...

1 Answer

52 in philips help.

the large IC's on a big heat sink is where the convergence ic's will be
here is an example
the resistors will be on the lines of these IC's
need help identifying the resistor values?

Dec 03, 2008 | Projection Televisions

1 Answer

Identifying resistor

look at the location marking on the pc boaed and record the number of the resistor  and then we can find the value of it via schematic /parts list ,also require model #

Oct 04, 2007 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Colors became distorted, then it shut off

Your tv has two problems showing up at the same time,the convergence IC's have loose conections in some of the conecting pins,the Ic's are mounted on heat sinks and can be identify by the markings on its face STK--- ---,3 letters and 6 numbers,one IC for each color,this pins need to be resoldered as well as any other loose conection or overheated areas in the board. The shutdown problem might be a resistor next to the output transformer,its value should be .47 ohms but it might measure open right now,the resistor is at the back edge of the circuit board on the right witch is the deflection board.If you are familiar with tv service you have a place to start but if you are not too familiar be safe and call for assistance from a servicer.Let Us know how it goes.

Oct 13, 2006 | Mitsubishi WS-55809 55" Rear Projection...

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